Sitmatic BigBoss™ 550 LB Ergonomic 24/7 Desk Chair with Headrest, Rocking, Extra Wide Seat, & Seat Slider

Sitmatic chairs are Made in America! Manufactured in Fullerton, CA. Sitmatic is the industry leader in ergonomics and has been building high quality, commercial grade furniture since 1985. Sitmatic designs and manufacturers its own major components, achieving a cohesive design vision as well as engineering integrity. Products can easily be customized to exactly match a client’s needs. Sitmatic guarantees a fit for all your employees. Sitmatic seating has passed the stringent testing procedures established by ANSI/BIFMA and CAL 117. All Sitmatic chairs are rated for 24/7 use and covered under a limited lifetime warranty.

BigBoss Task, full-scale with the advanced ergonomics you expect from Sitmatic. Unrivaled comfort for long periods of sitting. The scientifically engineered shape hugs and supports the back from lumbar to thorax. For maximum strength, two complete shells lock together for structural integrity. The massive backrest upright is a cold rolled alloy that will flex, but will never break. Safety is ensured with a specially engineered, intensive-use base that is seamless, cast as a single piece. Everything about the BigBoss Task Chair is designed for tough use.

Green Check Certified – BigBoss Chairs are independently tested to exceed Green Building Council’s LEED-CI Indoor Environmental Quality Standards. IEQ 4.5 and may comply with MRS 5.0.

Seamless, Intensive-Use Base – Safety is ensured with this specially engineered, five-star base. Cast as a single piece, there are no welds to break.

This BigBoss Task Chair has a 550 LB weight capacity and the largest seat available at 24 inches wide and 22 inches deep. A seat slider allows the user to adjust the seat width from 24 to 27 inches and the seat depth from 21 to 24.5 inches. The seat height ranges from 16.75 to 20.25 inches.

The Intuitive QuickBack allows you to move the backrest through an unprecedented 6” range in 27 positions. Fingertip control positions the lumbar support exactly where you need it.

Exceptional Lumbar Bolster – The pronounced lumbar bolster, the thoracic reliefs, and the gentle seat contours provide support along the entire torso for all day comfort. Lumbar height easily adjusts into 8 positions over a generous 4-inch range.

Ergonomic contouring of the seat shape and high resiliency PressureCast foam result in the most supportive and comfortable seat cushions possible.

This BigBoss Task Chair has Advanced Synchron Control – State of the art synchronized motion with independent back angle adjustment, side actuated tilt tension, and seat depth adjustment.

The entire chair rocks in a synchronized free-float mode; backrest reclines 20° (90° to 110°) while the seat reclines 9° (0° to -9°). The seat to backrest angle is independently adjustable 10° for fine tuning upright posture.

The chair is lockable in 6 different tilt-lock positions!

Adjustable height and width armrests. The arm height adjusts 4 inches into 10 different positions. The width adjusts 2 inches per side into 6 different positions.

This BigBoss Task Chair has an adjustable headrest. It adjusts 6 inches in height and 2.5 inches in depth with a dual pivot angle adjustment.